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The aim of this work was to characterize and to bring into relationship of
the net radiation with the latent heat flux equivalent to water (mm) in a patch
of Atlantic Forest within the metropolitan area of Sao Paulo (RMSP). The
estimation of the latent heat flux (LE) was made by the energy balance equation
with the Bowen ratio. Measurements of net radiation and psychometrics gradients
were made. Soil heat flux (G) was measured by temperature sensors in two
depths. Measurements were made at Park of Science and Technology of Sao Paulo
University (CIENTEC), Sao Paulo, Brazil, between 2011 and 2013. Results
indicated that evapotranspiration varies seasonally and the amount of water
evaporated exceeds 3.0 mm·day-1 in spring/summer and in
autumn/winter the amount is approximately 1.0 mm·day-1. The
evapotranspiration is increased under RMSP urban climate conditions with higher
air temperature and lower moisture especially in summer season.
Inorganic scintillators play an important role in detection and spectroscopy of gamma, X-rays and alpha particles as well as neutrons and charged particles. Scintillation crystals based on cesium iodide (CsI) are matters with relatively low hygroscopicity, high atomic number, easy handling and low cost, characteristics that favor their use as radiation detectors. In this work, pure CsI crystal and bromine doped CsI crystals were grown using the Bridgman technique. The concentration of the bromine doping element (Br) was studied in the range of 1.5 × 10-1 M to 10-2 M. The distribution of the doping element in the crystalline volume was determined by neutron activation. The result obtained with neutron activation analysis (NAA) has found that the mean values of Br found in grown crystals are consistent with those introduced in salt CsI, showing the incorporation of Br in the matrix structure of CsI. The optical transmittance assays were performed at a wavelength range of 110 nm to 1100 nm. Analyses were carried out to evaluate the developed scintillators, concerning alpha particles and gamma radiation.